Machine for forming penholder-tubes



. (No Model.) 2 Sheets-Sheet 1.

H. S. GRANNIS.` MACHINE FOR FORMING PENHOLDER TUBES.

Patented Sept. 25, 1894.

2 Sheets-Sheet 2.

(No Model.)

H. S.v GRANNIS. MACHINE FOR PORMING PBNHOLDBR TUBES.

No. 526,526. `Patented Sept. 25, 1894.

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. ve/7190# Zd? ZU/Z'n55555 UNITE NSTATES PATENT OFFICE.

HIAL S. GRANNIS, OF .PLANTSVILLE ASSIGNOR TO THE PECK, STOW t WILCOX COMPANY, OF SOUTHINGTON, CONNECTICUT.

MACHINE FOR FORMING PENHOLDER-TUBES.

SPECIFICATION forming part of Letters Patent No. 526,526, dated September 25, 1894.

Application filed May 25, 1894. Serial No. 512.444. (No model.)

To all whom it may concern:

Be it known that I, HIAL S. GRANNIS, a citi- `zen of the United States, residing at Plantsville, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Machines for Forming Penholder-Tubes, of which the following is a' specification. y L

My invention relates to improvements in machines for forming tubes, and the main oloject of my improvement is to produce a machine for rapidly and efficiently performing y this work, and one that' is especially adapted Vfor forming tubes of a small diameter.

In the accompanying drawingsFigure 1 is a plan View of my machine. Fig. 2 is a longitudinal section of the main portion of the same on the line m of Fig. 1. Fig. 3 isa longitudinal section on the line y y of Fig. 1. Fig. 4 is atransverse section on the line w w of Fig. 1. Fig. 5 is an enlarged transverse section of the series of dies. Fig. 6 is a longitudinal section ofthe same. end view of the same. Fig. 8 is a plan view of a blank for `forming pen holder tubes. Fig. 9 is a transverse section of the same showing the result. of the first step `,in the formation of said tube. Fig. 10 is alike view showing the` result-of the second step, and Fig. 11 is a like view showing the result of the third and iinal step in forming said blanks into a tube.

A designates the main shaft which may be j provided with any suitable driving wheel B and thepinion or gear 12, which in turn engages the gear wheel 13 upon the cam shaft 14, which cam shaft is virtually the main shaft of the machine, the shaft A and gear- `ing being` employed for the better application of power to the shaft 14. C designates the frame of the machine upon which these parts are mounted and it is provided with a sliding gate 15 arranged in any suitable Ways to move longitudinallyV in the frame. To avoid friction I provide this guide with a friction roller` 16 which is engaged by the cam D on the shaft 14 to force said slide toward the opposite end of the machine, said cam, as shown, being provided with three projections for thus forcing the slide forward three times at each revolutionof the shaft Fig. 7 is an 14. Upon the under side of the slide is an arm 17 which extends rearwardly to a point near the shaft 14 and in the sides of the cam D there are three pins or projections 18 for engaging the arm17 at the proper time and drawing the sliding gate 15 back after each forward movement. In the forward end of the slide 15 I arrange an intermittingly rotating head 19 carrying a series of dies, the same being mounted upon the shaft 20 upon which is a ratchet wheel 21, Fig. 3, that is `engaged by the pawl 22 that is secured to a stationary partA of the frame and which is forced into engagement with said ratchet wheel by any suitable spring pressure, as for y example, the spring 23. When the sliding gate 15 is drawn backward, the head 19 is rotated a fractional part of a revolution which as shown is one sixth.

On the end of the shaft 2O which is opposite the ratchet wheel 21 is a holding disk or collar 24 having at its edgea series of notches 25 which is spaced to co-incide with the spacing of the diesin said head. In the gate 15 is a Afriction plunger 26 (see Fig. 2) which is pressed forward by means of the spring 27 so that its end engages the holding disk or collar 24 and entering the notches or recesses before described holds the intermittingly revolving head against accidental displacement during its periods of rest.

Immediately in front of the intermittingly rotating head is the stationary die 28, the same being fixed in any proper manner to the frame. and having in its face a semi-circular groove. Underneath the die groove a suitable gage or stop 29 is employed to serve as a gage in putting in blanks. Immediately in front of the die groove in this die 2S is a mandrel 30, which is fixed ina sliding arm 3l that extends backwardly to the cam shaft 14, where it is engaged by the pin orprojection 32`upon the side of the cam D which faces the same, as best shown in Fig. 3. Surrounding the mandrel is a sliding block or knock-off 33 which is also provided with a guide pin 34 to prevent its accidental rotation ou the mandril,

as shown in Figs. 3 and 4. This mandrel is IOO may be dropped between theV die k228 and the mandrel and stopped by `the' gage or stop 29.y The moving dies ink they bead` 19 arey repre#` sented as during fthe" middle yof their inter- V mittent movement, the slidinggate not being drawn backward to its `extreme limit. The y'full backward movementof the sliding gate will leave the intermittingly rotating head f with oneof'the first dies 35 (Figs. .5 and 7) [o directly in front ot the mandrel 30, so that as the slidinggate moves forward said diek engages themandrel and forces it forward into the cavity of thedie 2&3.` In order toprevent the mandrel fronibeing bent, l also arrange i5 a projecting screw 36, on a forward part of `the sliding gate 15, so as to press upon ythe knock-offy 33 and carry the mandrel forward evenly withy the pressure 'thereon' from the dies. By makingV this projection 36 in ythe 2o form of a screw it may be adjusted so as to push evenly with the dies.` In. order'tofre`` cip'rocate the knock-0E longitudinally ofthe mandrel I, connect it by means of thepin4 37 with the knock-off lever 38, said lever being .z5 pivoted upon the frameas at 39, and actuated by means *of* pallet like arms 40 and" 4l which are engaged by cams or projections ft2 and 43, the one being upononeside of the gear 13, while the other is upon one side of 3o the camD, the same operating to imparta quick movementto the knock-od` lever at the proper time. lfl desired a springmay also be employed, as at 44, to hold this knock-olf lever in the position shown. f Whilel prefer to act- 3,5 nate this lever` positively inLbothdrections,

it may be movedin one direction by :a posi-y tive movement, as a cam, and lin the opposite direction by a spring. 1 The-movabledies consistof as'to rotate With'the shaft `2Ofijn any1 proper manner.` Inasmuchasthe vmetal fromwhich Vthe pen holder tubes are formed is quite stii and ksomewhat elastic, I `have 1 arranged the .45 movable dies in sets ofy threeforacting suo' cessively upon the blank. 'In order to show Va properway for securing thesedies to the` shaft 20, I haveshown thejsameenlarged in# Figs. 5, 6 and 7. j The middleportionof*the? 5o shaft, as at 45, is ofla larger diameter and.,y longitudinally through said enlargement "I makegrooves to receive the inner` edges 46 of the several dies` Thisba'se edge ofthe dies is extendedlongitudinallyof the shaft i beyond the bo'dylof the dies `propearso as to form tenonsli? at each end,over-which`a ring y or collarfiS is sec'nredto hold themy in place.

Upon the outer sides of these collars I arrange.

at one end the ratchet wheel 21 and at the 6o other end the holding disk' ory collar 24:.

These may be secured in place in any propery manner, as forexample, by means of" screws 49 which extend through into Vthe enlarged middle portion of the shaft 20, A dowel pin 65 50 may be employed to insure placing the `collars in the proper position. y `TheA first die isjintended toaotdireotly uponlther maili-` ing of the tube.

in the position shown in Figs. landii. `A

30..y As the parts continue their movement mandril 30 and forces it into the die 28, thereby bending the blank from its flat form `gate then retreats leaving the'blank and man- 51 orsecond die is `presented in alignment saidblank `fromthe.forni shovvnin Fig. 9 to i that shown inFig. l0. The slidinggate again retreatsleaving the mandrel and blank undis- InFig. r1, the projection LIES/on the side of ,into the shape shown inFig'.y 9. The sliding with themandrel. Asthe gate with this dief ismoved forward again sai'didie engages the ,t spread outk edges of the blank `and changes o' turbed.y f' The next die 52 is brought into align;

ment withsthe mandrel and as itis forced fore` e. `Ward it changes `the blank from the form kshown in Fig 10 t0 that shown; in Fig. lil.`

drel30and not upon the blank. The nekt` `die lis V'shapedV upon, its face and acts@ Y `upon the blank' topartially form it around"` the mandrel. f The linishing die 52 is concave l.

on its face andcompletes the folding or fotrm= l The blanks areudropped kdovvninio positionvr between the spindle 30yf andthe stationary die when the machine is,

y drel undisturbed andas the sliding gate moves f backwardly the rotating head is againv moved. l la fractional partof its revolution andthe die .7, f

roo; f

the-camvhasfj ustescaped the arm 41 andthe i 1 l projection 42hasforced the kueokoutlever y `133y into theposition shown.-As this projeo@V f i 2 ytionfet3\passesyforutfardland downwardwand setsofftwo or .4o kmorein each 2 set and they `may be secured so ,j

tog f drelcisstatioiiary relatively thereto', hat it is `iy ,y

`may be', formedwith dies which consistof sets of only two. I have also `shcwvn the revolving dies or head asy arranged with two sets, but itis obvious that this is not arbitrary.

formed by my machine by simply making a thereon.

jly consideritiunnecessarytoipoint out all l the Variations. :that 111W .be Y, madolrvig `teuiident that these parts may have theirfmo.ve-\ ;,k ment invertedivvithout changing; the general ffizo character` of -.myimprovement. fi '.,Wh'ile fori, seme'workit ymay be necessary or advisable,k

to employ diesin sets'fofthree or more, itis clearly. evident that With Lotln-ir (Work, tubesg f yIt is also obvious that longertubes'may be.; l

i 3c greaterlength of mandrel and dies to operate t t further movement of the main shaft will draw; y, f theslidng gate fully back and bring the first v moving die35directlyin front of the mandrel t .y

the sliding gatey and the moving dies are carred forward until the first die 35 kengages the.

the usual right to substitute equivalents and make changes in mechanical details.

I claim as my invention- 1. The combination of the sliding gate, mechanism for moving said gate, anintermittingly rotating head mounted on said gate and carrying dies, the stationary die acting in conjunction therewith, the intervening man drel working in connection with said stationary and movable dies and operating mechanism, substantially as described and for the purpose specified.

2. The combination of the sliding gate, mechanism for moving said gate, an intermittingly rotating head carrying dies, the stationary die acting in conjunction therewith, the intervening mandrel working in connection with said stationary and movable dies, a knock-off having a longitudinal movement relatively to said mandrel, `and operating mechanism, substantially as described and for the purpose specified.

3. The combination of the sliding gate, the

intermittingly rotating head-mounted on said gate and carrying dies the stationary die, the mandrel 30, mechanism for moving said sliding gate backward and forward once for each die in its head, and mechanism for moving said mandrel backwardly away from the sta` tionary die once during the action of each set ot' dies, substantially as described and for the purpose specified.

4. The combination of the stationary dies, the mandrel 30, the sliding gate, the intermittingly rotating head carrying dies and mounted in said sliding gate, the cam D for moving said gate forward, and the arm 1'( and projection moving in unison with said cam for drawing said slide backward, substantially as described and for the purpose specified.

HIAL S. GRANNIS. 

